86 SYNOPSIS OF BRITISH MOSSES. 



b. Peristome present. 



111. S. pnsilla, Bruch. and S. Minute, J inch stems, 

 loosely tufted, simple or dichotomous. ^ L. lanceolate- 

 subulate, setaceous above, very narrow, thinly nerved 

 nearly to apex. Perist. with teeth distantly barred. 

 Caps, on an upright pedicel, turbinate when dry, with 

 a flattish, oblique, beaked lid. 



Shady limestone rocks. April, May. 



112. [S. a.cutito]ia., Lind. Very small. L. and per. 1. 

 from a more or less sheathing base, abruptly narrowed 

 into a subterete, setiform, acute, pointed awl, formed 

 by the excurrent nerve, crenulate, seta 1 mm. long. 

 Caps, small, scarcely exserted, pyriform, with a short 

 neck, lid with a short, scarcely oblique beak] ; — type 

 not British but 



Var. j8. LONGiSETA, Lindb. Plant larger, seta 2 — 3 

 mm. long, caps, exserted, beak of hd longer and more 

 oblique — gathered by Mr. Wilson, 14th May, 1831, 

 and sent by him to Dr. Lindberg. 



Derbyshire, Yorkshire. May, June. 



113. S. trifaria, Brid. (tristicha, ed. 1, and Schp. 

 Syn.). Densely csBspitose, rigid. L. exactly trifarious, 

 crowded, rigid, shortly lanceolate, muticous, base 

 whitish. Caps, yellowish-brown, subspherical, with a 

 tumid neck, lid large, with a long, oblique or arcuate 

 beak ; per. teeth narrower than in calcarea. 



Calcareous stones and rocks. Summer. 



Blair Athol (Miss Mclnroy), Glen Tilt, and Ben-y- 

 Gloe ; Yorkshire, Derbyshire. 



114. S. paucifolia, Dicks. {8. subcemua, Schp.; 8. 

 caldcola, Mitt.). Densely gregarious, low. L. crowded, 

 erecto-patent, lower ones lanceolate, upper subulate, 

 from a narrow, oblong base, margins plane, nerve 



